当你从内心认定某件事是讨厌的或不好的时候，痛苦便产生了，所以，你务必使你的积极情绪支配你的心灵，诸如宁静、愉快、学会思考、学会观察、学会感恩、学会信任、学会欣赏、学会赞美，以养成保持积极情绪的好习惯，这是因为（）
①人的情绪是丰富多彩的
②积极的情绪使人思维敏捷，体力充沛，精力旺盛
③积极的情绪有益于人们的身心健康
④保持积极的情绪有利于人们战胜挫折，成为生活的强者 

阅读短文，判断正误。用“正确”或“错误”表示。

Penguins are good swimmers, and they are very good at swimming in the sea. They can dive much deeper than people. Some people can dive about 180 metres, but most people can only dive about 30 metres. Penguins can dive 500 metres. That is a long way down! Do you know the TV Tower in Shanghai? That is 468 metres high.

 Penguins can hold their breath much longer than people.Some people can hold their breath for about five minutes, but most people can only hold their breath for one or two minutes. Penguins can hold their breath for 20 minutes.

Many whales can hold their breath longer than penguins. Some whales can hold their breath for about two hours!

以虚线为对称轴，画出下列图形的轴对称图形

有人说：“在国际关系中，没有永恒的朋友，也没有永恒的敌人，只有永恒的利益。”下列历史事件最能反映这一观点的是（    ）